Carton and liner assembly



Feb 26, 1963 P. CHERRIN CARTON AND LINER ASSEMBLY 5 Sheets-Sheet 1 Filed March 10, 1960 INVENTOR. 52/2 6/?e'7'77' Feb. 26, 1063 P. CHERRIN CARTON AND LINER ASSEMBLY 3 Sheets-Sheet 2 Filed March 10, 1960 INVENTOR.

Feb. 26, 1963 Filed March 10, 1960 P. CHERRIN CARTON AND LINER ASSEMBLY 3 Sheets-Sheet 3 INVEN TOR. 7%:7/379 C/errzzz linited rates i atent 3,it79,li6li ARTGN ANEE LENJER AdddlvlBLY Phillip Cherrin, Huntington Woods, Mich, assignor of one -fifth to Sam Qherrin, onedii'th to Abe Qherrin, both of Detroit, Mich-1., onenth to Lem fireman, and onefilth to Archie Cherriu, both or: Gals Park, Mich. Filed Iliar. 10, 196i), Ser. No. 14,933 1 ill. 229-44) invention relates generally to foldable containers and more particularly to a corrugated cardboard carton having a collapsible inner liner secured thereto.

Many difi'erent products must be stored and shipped in moisture proor" containers. Examples of such products are confections, cottage cheese, frozen foods and the like. A corrugated carton having an inner polyethylene liner is ideal for this purpose, but it is dilhcult to position a liner in a cardboard carton, on an eli'icient production line basis, so that the capacity of the liner and carton are fully uti ized. It is an object of this invention, therefore, to provide a corrugated cardboard carton and a collapsible bag liner therefor which are assembled during construction of the carton so that the act of unfolding and setting up the carton also sets up the bag liner so that it can readily be filled. The bag is initially secured to the car- 'ton so that when the carton is set up the lower end of the bag is positioned at the bottom of the box so that when the lined carton is filled, the pressure of the contents is applied to the carton and not the bag. The length of the bag is such that when the carton is set up with the top flaps extending upwardly from the side and end panels, the upper end of the bag extends beyond the top flaps a distance sufiicient to permit the upper end of the bag to be doubled over upon itself and inserted in the slots formed between adjacent top flaps. As a result, the upper end the bag is maintained in a fully opened position to facilitate filling of the carton and the bag is of a length such that it can easily be tied with a wire, rope or the like, to seal the upper end of the bag.

Further objects, features and advantages of this invention will become apparent from a consideration of the following description, the appended claims and the accompenyin g drawing in which:

FIGURE 1 is a perspective view of the carton and liner assembly of this invention, in a position in which the top end thereof is open for filling;

FEGURE 2 is a perspective view of the carton and liner assembly of this invention, illustrated similarly to FIG. 1, showing the top end of the carton closed;

FIGURE 3 is an enlarged sectional view looking substantially along the line 33 in PEG. 1;

FEGURE 4 is an enlarged fragmentary View of the portion of FIG. 3 indicated by the circle 4;

FIGURE 5 is a fragmentary foreshortened sectional view looking substantially along the line 55 in FIG. 3;

FlG-URE 6 is a foreshortened sectional view looking along the line 5 6 in FIG. 2;

FEGURE 7 is a developed plan view of the carton and liner assembly shown in FIG. 1;

PEGURE 8 is an enlarged sectional view as seen along the line 88 in FlG. 7;

FIGURE 9 is a fragmentary perspective view of the bottom end of the assembly of this invention, showing the positions which the bottom ends of the bag and liner assume when the carton is initially opened up;

FEGURE 1G is a developed plan view of a modified form of the carton and liner assembly of this invention;

FlGURE 11 is a fragmentary perspective view of the bottom end of the assembly shown in FIG. 9;

FIGURE 12 is a developed plan view of another modilied form of the carton and liner assembly ofi this invenice tion which is in all respects similar to the assembly shown in FIG. 7 but has the seam located intermediate the ends rather than at one end of a side panel.

With reference to the drawing, the carton and liner assembly of this invention, indicated generally at M, is illustrated in FIGURE 1 as including a corrugated cardboard carton l2 and a bag liner 14 which may be formed of any suitable collapsible or foldable material. The corrugated cardboard carton 12 is of a generally rectangular shape in cross section having side panels 16 and end panels 18. A pair of bottom closure flaps 2i (FIG. 7) are integrally formed with the lower ends of the side panels 16 and similar bottom closure flaps 22* are integrally formed with the end panels 13. A pair of top closure flaps 24 are formed integral with the upper ends of the side panels 16 and similar top closure flaps to are formed integral with the upper ends of the panels 18. The bottom and top closure fiaps 2i) and 24 are of a length to extend halt the distance between the side panels 16 in the opened position of the carton 12. It is to be understood that the terms side, end, top and bottom are used herein to facilitate the description of the carton l2, and are not to be construed as limiting either the shape or the position which the carton 12 must assume.

As shown in FIG. 7, the closure flaps 2t 22, 24 and 26 are all of substantially the same length and adjacent flaps are separated by a slot 23 formed in the corrugated cardboard blanl; which is scored and then folded to form the cartonshown in FIG. 2. The blank shown in FIG. 7 is scored along the lines 30 so that when the blank is folded along the lines 3d a carton is formed which is rectangular in cross section and has the score lines 31} at the corners of the carton 12. In addition, the end panels 18 and the top and bottom closure flaps 22 and 26 are formed with median score lines 32 for a purpose to appear presently.

To form the carton 12 from the blank shown in FIG. 7, the end panels 18 are folded along the median score lines 32 and the side panels 16 are positioned in substantial alignment with each other. With the blank thus folded, the ends 34 of the blank are in an abutting relation at what will eventually be a corner of the carton 12. A length of tape 35 is then applied so that it overlaps the blank ends 34 to form the seam which is necessary to complete the carton 12. The advantage of folding the blank along the median score lines 32 in the end panels 18 is that it provides for an initial alignment of the side panels 16 which is maintained during the setting up of the carton 12.

The liner 14 which may be of any collapsible or fold able material such as paper or plastic, and which is illustrated as being moisture proof polyethylene, is initially in a flat form having a first pair of opposite fiat sides 37 and a second pair of sides which are in the form of side pleats 36 that are folded inwardly so that the bag 14 is initially of a width corresponding substantially to the width of a side panel 16, as shown in FIGS. 7 and 8. The bottom end of the bag 14 is closed by a seam 38, formed usually by heat sealing opposite sides of the bag, which is initially aligned with the terminal end of one or" the bottom closure flaps 26, as also shown in FIG. 7. Adhesive so is applied to one of the side panels 16 and the bag 14 is placed on the adhesive so as to adhere one side 37 of the bag 14 to the carton l2. Adhesive 41 is applied to the other side panel 16 so that when it is folded over into alignment with the other side panel 15 and pressed into engagement with the other side 37 of the bag 14, this side of the bag is also secured to the carton 12. The pleats 36 in the bag 14 are of a width corresponding to the width of a carton end panel 18 so that when the carton 12 is opened up the bag 14 will be coextensive in size with and form a liner on the inside of the carton 12.

With the carton 12 and the bag 14 thus assembled, the

bag-and.- carton assembly is readily opened or set up y merely movingthe score lines 32 toward each-other to straighten the folded end panels 18. This action provides for movement of the side panels 16 away from each other to a final positiou spaced'aparta distance equal-to the-widths of the end panels: 18. When: the bag 14 is set up the pleats 36 form triangular gussetsor reinforcing sections 21 at opposite, ends of the bottom of the bag 14. Thegussets 21 are secured to the bag bottom at the seam 38-and are of, double thickness as shown in FIG. 6.

Because the bottom flaps "are1of alength to extend half the distance across the bottomof-the carton 12, the positioning of the bottom-endlof the bag. 141so that it .is located at the terminal end of. aclosure flap" 2% automatically provides fora location of the bottom end of the bag at the bottom ends of the carton side panels 16 when the carton is setup. The bottom closure flaps 2t) and 22 are then folded inwardly-to close the lower. end ofthecarton-and a tapemember 421or the likeis applied to the bottom-end of the carton.

The bag 14 is of a length such thatthetop' end 44 thereof extends substantially beyond. the; terminalends of the top closure flaps 24-and26'. As .a;result,.when the-carton is in a flat folded condition with the. side panels 16 flat against each other so that the slots 28 on opposite 'sides'of the box-are lined up and-therupper end 44-of-the bag 14 can he turned outwardly. and'doubled over upon itself and then inserted in the slots 28between the-top closure flaps 24 and 26, as shown in:FIG. 1. When'the carton 12 is set up by moving the fold lines '32 toward each other, the bag 14 is unfolded so that the upper end thereof is fully open, as shown in FIG. l,lwithout requiring any further attention to the bag. This ar rangement also maintains the upper end of the bag 14 fully openso that'the assembly 16 can easily be filled'on a production line basiswithout any danger that the bag 14 will be in the way. After the bag 14 has been filled so that thecontents, indicated at 43 in FIG. 6, are not above the upper ends of the side and'end panels16 and 18, the upperend of'the bag 14-is closed with a wire, string or the like (notshown), or heat sealed, following which the top closure flaps 24and 26 are folded inwardly to positions closing the upper end of the carton 12 and a closure tape48 is applied to the flaps 24.

The primary advantage of the carton shown in FIGS. 1-8, which has the median fold lines 32 in addition to the corner fold lines 36 that are provided in a regular corrugated cardboard carton, is that the side panels 16 are in continual alignment thereby making it possible to adhere both sides of the bag liner 14to the side panels 16 of the carton 12 and insert the-upper end 44 of thebag in, the slots 28 so that when the carton is set up the bag 14 is automatically unfolded with the top end thereof open. As a result, when the carton 12' is set up the bag 14 is automatically also unfolded and set up so, that it forms an inner liner for the carton 12. For this reason, the carton 12 is preferred in the assembly 10 which is particularly suited for assembly line production. The corrugated cardboard blank is placed flat on a conveyor which feeds it into the machine which folds it and applies the seam tape 35. Prior to entry of the blank into the machine, the adhesive 40 and 41 is applied and the bag 14 is placed on the adhesive 40 as shown in FIG. 7. The machine then folds the blankso that the side panels 18 are moved into alignment and the bag and adhesive 41'are moved into'engagement.

However, some of the advantages of assembly and ease of filling obtained with the assembly 10 by locating the lower end of the bag 14 at the terminal end of a closure;

FIGS. lO'and l1 andindicated by the numeral 12a. The

carton 12a is identical to the. carton 12' except that the median fold lines 32 are omitted, and numerals with the letter suffix a. are used on the cartonlZa to indicate parts like the correspondingly numbered parts of carton 12. As a result, when the carton blank shown in FIG. 10 is folded so that the opposite ends 50 thereof are adjacent each other, the carton side panels 16a are offset relative to each-other. The bag 14-is assembled with the carton12a, when the carton blank is fiat, by locating the bottom seam 38 in the bag 14 at the terminal end of a bottom closure flap Zita with the top end 44 of the bag located substantially above the top closure flaps 24a and 26a. The side of'the bag 14 adjacent the blank is secured by adhesive 52 to one of the carton side panels 16a. In the assembly 16a, after the carton 12a is set up, the'bag 14- isindependently opened up within the carton 12a and thetop end44ofthe bag 14 is then folded over upon itselfand inserted with the slots 28a. The top end 44* ofrthe bag 14 may be doubled over and inserted in the pair of slots 28a which are located, on opposite sides ofthe top-flap 24a securedto the side panel 16a to which the-bagisadhered, when the carton is in a folded'condition to. eliminate any necessity for reaching into thecarton-tograsp-theupper end of the bag after the carton is set up; Following setting'up' of the carton the upper end oflthe bag .14 is'readily doubled over and inserted in the remaining SlOlISL 28a to the fully open upper end of the bag.

A-modified carton andliner assembly 10b is illustrated inFIG. 11 which is identical to the assembly 10, but which has the ends 60 of the blank which forms the carton IZb'located so that the seam in the carton will be between the ends of a side panel 16b rather than at one end'as in the carton 12. Numerals, with theletter sufiix b added, are used in FIG. ll-to indicate parts which are similarly numbered in theassembly 10.

From the above description, it is seen that this invention provides carton and liner assemblies 10, 10a and 10b, whichcan be efliciently assembled on a production line-basis to provide a lined corrugated cardboard carton which can thenbe efficiently filled with goods, also on a production line basis. Because the cartons are formed with a closure flap which extends across half the width of the bottom of the carton when the carton is set up and the bag is of a width correspondingto the width of the box bottom, the bag 14 is properly positioned'with respectto the carton 12'when the bag bottom'end is positioned at the terminal end'of the bottom closure flap. By making the bag 14 of a length such that it can be folded upon itself over a pair of opposite top closure flaps, a fully open positionof the bag during filling is insured. The pairs of top flaps 24 and 26 are not folded along the score lines which separate them from the panels 16 and 18 until after the bag 14 is filled. Consequently, either or both pairs-are capable of providing the necessary rigid support for'the upper end'of the bag 14 during filling.

It will be understood that the specific construction of the improved carton and liner assemblies which are herein disclosed and described are, presented for purposes of explanation and illustration and are not intended to indicate limits of the invention, the scope of whichis defined by the following claim.

What is claimed is:

A container and liner assembly comprising a corrugated cardboard carton having side and end panels and bottom and top closure flap-s, each of said end panels being foldable upon itself along a median fold line extending between the top and bottom of said carton, whereby said carton has the side panels disposed in substantial alignment in both the folded and setup conditions of said carton, a liner bag formed of a collapsible material and having sides and ends corresponding substantially in size to the size of said side and end panels, said ends being formed as inwardly extending pleats when said bag is 3,079,060 5 5 folded flat, said bag having opposite sides thereof secured References Cited in the file of this patent to the inner faces of said container side panels so that the bottom of said bag is at the bottom of said carton UNITED STATES PATENTS when said carton is unfolded and the side edges of the 2,177,918 Vogt 31, 1939 sides of said bag are disposed along the corresponding 5 2,250,249 Befgstfiln J ly 9 1 edges of said side panels, said carton being formed from ,503 Walton June 27, 1944 a scored blank which is folded so that opposite ends 2,436,061 Waters Feb. 17, 1948 of the blank are arranged in an abutting relation inter- 2,801,577 Ingham Aug. 6, 1957 mediate the ends of one of said side panels in said carton, 2,930,517 Mensing Mar. 29, 1960 and means connecting said blank ends. 10 2,950,037 Orsini Aug. 23, 1960 

